Structure 39043 · Philadelphia County, PA

Wissahickon Avenue over Septa (chestnut Hill W)

Carries Wissahickon Avenue over Septa (chestnut Hill W), Near Queen Lane 3480b07.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

46 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1916rebuilt 1985
Length45.9 ft14 m
Daily traffic13,160counted 2024
Last inspectedAugust 2022every 48 months

Location

StatePennsylvania
CountyPhiladelphia
LocationNear Queen Lane 3480b07
CarriesWissahickon Avenue
CrossesSepta (chestnut Hill W)
Coordinates40.02257, -75.17815

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length45.9 ft (14 m)
Max Span43.0 ft (13.1 m)
Deck Width55.1 ft (16.8 m)
Deck Area235.2 sq m
Main Spans1
Year Built1916 (reconstructed 1985)

Traffic

Avg Daily Traffic13,160 (2024)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000039043

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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